Example usage for javax.servlet.http HttpServletResponse flushBuffer

List of usage examples for javax.servlet.http HttpServletResponse flushBuffer

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Introduction

In this page you can find the example usage for javax.servlet.http HttpServletResponse flushBuffer.

Prototype

public void flushBuffer() throws IOException;

Source Link

Document

Forces any content in the buffer to be written to the client.

Usage

From source file:org.craftercms.cstudio.publishing.servlet.DeployVersionServlet.java

@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
        throws ServletException, IOException {
    PrintWriter serverOut = response.getWriter();
    try {//from  w  w  w  .j  a v  a2 s .c  o m
        String target = request.getParameter(FileUploadServlet.PARAM_TARGET);
        if (StringUtils.isEmpty(target)) {
            response.setStatus(HttpServletResponse.SC_BAD_REQUEST);
            serverOut.write("Parameter \"" + FileUploadServlet.PARAM_TARGET + "\" is need");
        } else {
            String currerntVersion = versioningService.readVersion(target);
            response.setStatus(HttpServletResponse.SC_OK);
            serverOut.write(currerntVersion);
        }
    } catch (VersionException ex) {
        response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
        serverOut.write(ex.getMessage());
    }
    setDefaultHeaders(response);
    serverOut.flush();
    response.flushBuffer();
}

From source file:com.qcadoo.mes.cmmsMachineParts.controller.MaintenanceEventMultiUploadController.java

@RequestMapping(value = "/getAttachmentForEvent.html", method = RequestMethod.GET)
public final void getAttachment(@RequestParam("id") final Long[] ids, HttpServletResponse response) {
    DataDefinition attachmentDD = dataDefinitionService.get("cmmsMachineParts", "eventAttachment");
    Entity attachment = attachmentDD.get(ids[0]);
    InputStream is = fileService/*  w w w. j av  a2s  .c om*/
            .getInputStream(attachment.getStringField(TechnologyAttachmentFields.ATTACHMENT));

    try {
        if (is == null) {
            response.sendRedirect("/error.html?code=404");
        }

        response.setHeader("Content-disposition",
                "inline; filename=" + attachment.getStringField(TechnologyAttachmentFields.NAME));
        response.setContentType(
                fileService.getContentType(attachment.getStringField(TechnologyAttachmentFields.ATTACHMENT)));

        int bytes = IOUtils.copy(is, response.getOutputStream());
        response.setContentLength(bytes);

        response.flushBuffer();

    } catch (IOException e) {
        logger.error("Unable to copy attachment file to response stream.", e);
    }
}

From source file:com.qcadoo.mes.cmmsMachineParts.controller.MachinePartMultiUploadController.java

@RequestMapping(value = "/getAttachment.html", method = RequestMethod.GET)
public final void getAttachment(@RequestParam("id") final Long[] ids, HttpServletResponse response) {
    DataDefinition attachmentDD = dataDefinitionService.get("cmmsMachineParts", "machinePartAttachment");
    Entity attachment = attachmentDD.get(ids[0]);
    InputStream is = fileService/*from www. ja  v a 2  s  .  com*/
            .getInputStream(attachment.getStringField(TechnologyAttachmentFields.ATTACHMENT));

    try {
        if (is == null) {
            response.sendRedirect("/error.html?code=404");
        }

        response.setHeader("Content-disposition",
                "inline; filename=" + attachment.getStringField(TechnologyAttachmentFields.NAME));
        response.setContentType(
                fileService.getContentType(attachment.getStringField(TechnologyAttachmentFields.ATTACHMENT)));

        int bytes = IOUtils.copy(is, response.getOutputStream());
        response.setContentLength(bytes);

        response.flushBuffer();

    } catch (IOException e) {
        logger.error("Unable to copy attachment file to response stream.", e);
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.auth.krb5.Krb5Authenticator.java

@Override
public Boolean handleLoginPrompt(HttpServletRequest req, HttpServletResponse res, String baseURL) {

    logger.debug("Sending login prompt...");
    if (res.getHeader(WWW_AUTHENTICATE) == null) {
        res.setHeader(WWW_AUTHENTICATE, NEGOTIATE);
    }//from  ww  w. j a  v  a 2  s .c om
    // hack to support fallback to form auth in case the
    // client does not answer the SPNEGO challenge.
    // This will obviously break if form auth is disabled; but this isn't
    // much of an issue since other sso filters will not work nicely after
    // this one (as this one takes over the response and flushes it to start
    // negotiation).
    String refresh = String.format("1;url=/%s/login.jsp", VirtualHostHelper.getWebAppName(req));
    res.setHeader("Refresh", refresh);
    res.setStatus(HttpServletResponse.SC_UNAUTHORIZED);
    res.setContentLength(0);
    try {
        res.flushBuffer();

    } catch (IOException e) {
        logger.warn("Cannot flush response", e);
    }
    return true;
}

From source file:com.almende.eve.transport.http.DebugServlet.java

/**
 * Handle hand shake.//from w  w w.j a v  a  2s  . co  m
 * 
 * @param req
 *            the req
 * @param res
 *            the res
 * @return true, if successful
 * @throws IOException
 *             Signals that an I/O exception has occurred.
 */
private boolean handleHandShake(final HttpServletRequest req, final HttpServletResponse res)
        throws IOException {
    final String time = req.getHeader("X-Eve-requestToken");

    if (time == null) {
        return false;
    }

    final String url = req.getRequestURI();
    final String id = getId(url);
    final HttpTransport transport = HttpService.get(myUrl, id);
    if (transport != null) {
        final String token = transport.getTokenstore().get(time);
        if (token == null) {
            res.sendError(HttpServletResponse.SC_PRECONDITION_FAILED);
        } else {
            res.setHeader("X-Eve-replyToken", token);
            res.setStatus(HttpServletResponse.SC_OK);
            res.flushBuffer();
        }
    }
    return true;
}

From source file:com.vico.license.controller.LicenseController.java

/**
 * @param serialNumberId/*  w w w .j av  a2 s. co  m*/
 * @return
 * @throws IOException
 * @param:
 * @return: ProcessResult
 * @Title: useLicense
 * @Description: ??
 */
@RequestMapping(value = "uselicense")
public void useLicense(@PathParam("serialNumberId") String serialNumberId, HttpServletResponse response) {
    ProcessResult processResult = new ProcessResult();
    String path = ClassPathResourceURI.getResourceURI("/").getPath();
    boolean creatsucess = false;
    String nameofzip = "license.zip";
    creatsucess = licenseService.createZIPFile(Integer.parseInt(serialNumberId));
    if (!creatsucess) {
        logger.error("?ZIP!");
        return;
    }

    try {
        FileInputStream inputStream1 = new FileInputStream(path + nameofzip);
        response.addHeader("Content-disposition", "attachment;filename=license.zip");
        response.setContentType("zip/plain");
        IOUtils.copy(inputStream1, response.getOutputStream());
        response.flushBuffer();
    } catch (Exception e) {
        logger.error(e);
    }

    try {
        int i = licenseService.modifyLicenseState(Integer.parseInt(serialNumberId));
        if (i == 1) {
            processResult.setResultcode(ProcessResultEnum.RETURN_RESULT_SUCCESS);
            processResult.setResultdesc(ProcessResultEnum.MODIFY_SUCCESS);
        } else {
            processResult.setResultcode(ProcessResultEnum.RETURN_RESULT_FAIL);
            processResult.setResultdesc(ProcessResultEnum.MODIFY_FAIL);
        }
    } catch (Exception e) {
        logger.error(ProcessResultEnum.MODIFY_ERROR + ProcessResultEnum.getClassPath());
    }
}

From source file:com.vico.license.controller.LicenseController.java

@RequestMapping(value = "uselicense/{serialNumberId}")
public void useLicenseAngu(@PathVariable("serialNumberId") String serialNumberId,
        HttpServletResponse response) {
    ProcessResult processResult = new ProcessResult();
    String path = ClassPathResourceURI.getResourceURI("/").getPath();
    boolean creatsucess = false;
    String nameofzip = "license.zip";
    creatsucess = licenseService.createZIPFile(Integer.parseInt(serialNumberId));
    if (!creatsucess) {
        logger.error("?ZIP!");
        return;/* www  .  j  a  va  2  s  . c  om*/
    }

    try {
        FileInputStream inputStream1 = new FileInputStream(path + nameofzip);
        response.addHeader("Content-disposition", "attachment;filename=license.zip");
        response.setContentType("zip/plain");
        IOUtils.copy(inputStream1, response.getOutputStream());
        response.flushBuffer();
    } catch (Exception e) {
        logger.error(e);
    }

    try {
        int i = licenseService.modifyLicenseState(Integer.parseInt(serialNumberId));
        if (i == 1) {
            processResult.setResultcode(ProcessResultEnum.RETURN_RESULT_SUCCESS);
            processResult.setResultdesc(ProcessResultEnum.MODIFY_SUCCESS);
        } else {
            processResult.setResultcode(ProcessResultEnum.RETURN_RESULT_FAIL);
            processResult.setResultdesc(ProcessResultEnum.MODIFY_FAIL);
        }
    } catch (Exception e) {
        logger.error(ProcessResultEnum.MODIFY_ERROR + ProcessResultEnum.getClassPath());
    }
}

From source file:org.apache.cocoon.servlet.RequestUtil.java

private static void manageException(HttpServletRequest req, HttpServletResponse res, Environment env,
        String uri, int errorStatus, String title, String message, String description, Exception e,
        ServletSettings settings, boolean verbose, Object sender) throws IOException {
    if (settings.isManageExceptions()) {
        if (env != null) {
            env.tryResetResponse();/*from ww  w.  ja  va  2s . c o m*/
        } else {
            res.reset();
        }

        String type = Notifying.FATAL_NOTIFICATION;
        Map extraDescriptions = null;

        if (errorStatus == HttpServletResponse.SC_NOT_FOUND) {
            type = "resource-not-found";
            // Do not show the exception stacktrace for such common errors.
            e = null;
        } else {
            extraDescriptions = new HashMap(2);
            extraDescriptions.put(Notifying.EXTRA_REQUESTURI, req.getRequestURI());
            if (uri != null) {
                extraDescriptions.put("Request URI", uri);
            }

            // Do not show exception stack trace when log level is WARN or above. Show only message.
            if (verbose) {
                Throwable t = DefaultNotifyingBuilder.getRootCause(e);
                if (t != null) {
                    extraDescriptions.put(Notifying.EXTRA_CAUSE, t.getMessage());
                }

                e = null;
            }
        }

        Notifying n = new DefaultNotifyingBuilder().build(sender, e, type, title, "Cocoon Servlet", message,
                description, extraDescriptions);

        res.setContentType("text/html");
        res.setStatus(errorStatus);
        Notifier.notify(n, res.getOutputStream(), "text/html");
    } else {
        res.sendError(errorStatus, title);
        res.flushBuffer();
    }
}

From source file:com.kixeye.chassis.transport.swagger.SwaggerServlet.java

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    // figure out the real path
    String pathInfo = StringUtils.trimToEmpty(req.getPathInfo());

    while (pathInfo.endsWith("/")) {
        pathInfo = StringUtils.removeEnd(pathInfo, "/");
    }//  w  w  w . j  ava  2s .  co m

    while (pathInfo.startsWith("/")) {
        pathInfo = StringUtils.removeStart(pathInfo, "/");
    }

    if (StringUtils.isBlank(pathInfo)) {
        resp.sendRedirect(rootContextPath + "/" + WELCOME_PAGE);
    } else {
        // get the resource
        AbstractFileResolvingResource resource = (AbstractFileResolvingResource) resourceLoader
                .getResource(SWAGGER_DIRECTORY + "/" + pathInfo);

        // send it to the response
        if (resource.exists()) {
            StreamUtils.copy(resource.getInputStream(), resp.getOutputStream());
            resp.setStatus(HttpServletResponse.SC_OK);
            resp.flushBuffer();
        } else {
            resp.sendError(HttpServletResponse.SC_NOT_FOUND);
        }
    }
}